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POC getchar input problems
primarykey
Id
20162544
data
AcceptedAnswerId
20164250
AnswerCount
2
ClosedDate
CommentCount
4
CommunityOwnedDate
CreationDate
2013-11-23T12:55:01.770
FavoriteCount
0
LastActivityDate
2013-11-23T20:20:38.997
LastEditDate
2013-11-23T15:46:51.833
LastEditorUserId
3002496
OwnerUserId
3002496
ParentId
0
PostTypeId
1
Score
0
ViewCount
1273
LastEditorDisplayName
text
Body
I need to receive a single line of characters and convert them from the base they are written in to a decimal base, as soon as a character is typed. I did this by using the following function: <pre><code>int inToDec(int base) //My assumption is that Enter will not be pressed as the first character - if it is, I am not sure what to do in that case { int numdec=0, c;//decimalized number, a variable for character inpu while((c = getchar()) != '\n' && c != EOF) { if(c >= 97)//Checks if the char is an actual char c = c - 'a' - 1; else//or a digit char c = c; numdec += numdec * base + c;//every time another char is inputted, it multiplies the numdec by the base and adds the char's value in decimal base - which is essentially the algorithm for conversion to decimal base. } return numdec; } </code></pre> My main(): <pre><code>#include <stdio.h> #include "funcs.h" int main() { int option, fbase, tbase, num1, num2; do { scanf("%d",&option); switch(option) { case 1: scanf("%d",&fbase); num1 = inToDec(fbase); num2 = inToDec(fbase); outFromDec(num1+num2,fbase); break; case 2: scanf("%d",&fbase); num1 = inToDec(fbase); num2 = inToDec(fbase); if(num1>=num2) outFromDec(num1-num2,fbase); else outFromDec(num2-num1,fbase); break; case 3: scanf("%d",&fbase); scanf("%d",&tbase); num1 = inToDec(fbase); outFromDec(num1,tbase); break; } }while(option != 4); return 0; } </code></pre> Except that when I input the number(after the option and the desired base) and type Enter to continue to the next one, suddenly it starts to print a character time after time without end. What did I do wrong and how do I fix it? Or, if you do not want to explain some obvious fact to a noob, where do I read about it (preferably without too much heavy duty tech-talk, as I am relatively new to programming). outFromDec() - <pre><code>void outFromDec(int num, int base) //converts num into the base given and prints { int count = 0 , temp = num, i; char c; while(temp != 0) { temp /= base; count++; } temp = num; do { for(i=1;i<count;i++) temp /= base; if(temp<=9) c = '0' + temp; else c = 'a' + temp - 1; putchar(c); count--; temp = num / temp; }while(temp != 0); } </code></pre>
Tags
<c><getchar>
Title
C getchar input problems
singulars
PostAcceptedAnswerId
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
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1. This table or related slice is empty.
PostTypePostTypeId
1. PTQuestion
UserLastEditorUserId
1. USSunspawn
UserOwnerUserId
1. USSunspawn
plurals
PostLinksPostIdRelatedPostId
1. PL
 singulars
 LinkTypeLinkTypeId
 LTLinked
PostLinksRelatedPostIdPostId
1. This table or related slice is empty.
PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
2. PO
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 PostTypePostTypeId
 PTAnswer
VotesPostIdCreationDate
1. This table or related slice is empty.
CommentsPostId

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